21.   -- Back pain -- caused from long periods of leaning forward to maintain balance.

22.   A long-term program of careful revenue increases and of prudent budget cuts that maintain social balance and sustain a quality public life can ease us into fiscal poise.

23.   A. We have tried to maintain a balance between unexciting but attractively valued domestic names, and there are some, even in a weak economic environment.

24.   But as more and more black families replace whites in parts of their communities, there is growing concern about whether this balance can be maintained.

25.   But he also strives to maintain the balance between his French and American worlds.

26.   But some other scientists try to maintain a balance between academia and business, and there is always tension behind the scenes.

27.   By tradition, New Jersey governors have maintained a balance of Democrats and Republicans among the six associate justices on the Supreme Court.

28.   But, as usual, he is inventive and articulate enough to maintain his balance.

29.   Can she maintain a balance of physical and mental preparedness without becoming obsessed and overwhelmed by it all?

30.   Carbohydrates are for energy, and electrolytes such as sodium and potassium maintain fluid balance.